I'm a hater as much as everyone else but lowkey kazuyas thought process here isn't even unrealistic, 99% of the dudes in this comments section would have the same kinda thoughts. It's just annoying because its stretched out chapter wise but in this case there's nothing inherently wrong with what he thinks
thinking that what you do is an inconvenience is a super common line of thought for insecure people, same for that "all those other people see a different side blah blah they're all so shiny"
I think this manga is shitty and that it's a waste of time and is being milked, but the hate on kazuyas thought process is definitely because it hits close to home